Pumicing stone



United States Patent O PUMICING STONE Georges Grandemange, Nice, France Application October 3, 1955, Serial No. 537,957 2 Claims. ('Cl. 51-204) The present invention pertains to a pumicing stone.

The principal object of the invention is to obtain a stone useful for pumicing the hardened parts of the body such as the feet.

Another object of the` invention is to obtain a pumicestone provided with intersecting orthogonal and oblique grooves which improve and increase the efficiency.

Still another object of the invention is to improve a pumice-stone by forming a rough surface for said stone.

Still another object of the invention is to obtain an improved pumice-stone with rubbing elements obtained from inclined grooves of different depth allowing longer use of the stone with `constant efficiency.

yThe above objects are obtained in forming grooves on a surface of a pumicestone, one set of the grooves being parallel and orthogonal and another set of grooves intersecting the aforesaid grooves at right angles being dened by oblique parallel planes forming a rough surface of protuberances of different angles and shape; the grooved surface being formed on one or more sides.

The invention is fully disclosed by way of example in the following description and in the accompanying drawings n which:

Figure l is a plan view; and v Figure 2 is a section on line 2-2 of Figure 1.

Reference to these views will now be made by use of like characters which .are employed to designate corresponding parts throughout.

Figure 1 of the drawing shows a pumice-stone 1 which is of rectangular and iiat form. The edge on one side is bevelled at 2 and the same side is channeled by parallel and oblique lgrooves 3. The later grooves are crossed at right angle by parallel grooves 4 which are vertical and of :same depth as grooves 3. Grooves 3 and 4 form a net of orthogonal lines forming square protuberances 5 having sides of different angles. The number and angle of grooves may vary to a large extent. The protuberances may be limited to only part of the surface of the pumicestone.

In the use of the invention, the pumice-stone is used in the usual manner for pumicing the hardened parts of the body such as the feet. The grooves keep their form until the stone is worn to their bottom. The rubbing elements can be formed on more than one surface of a pumicestone.

Although `a specific embodiment of the invention has been illustrated and described, it will be understood that various alterations in the details of construction may be made without departing from the scope of the invention as indicated by the appended claims.

What I claim is:

l. A pumice stone comprising, a monolithic body having on atleast one face thereof a set of parallel orthogonal grooves, and a set of grooves bounded by parallel planes which are oblique to the face of the stone and intersect thev aforesaid orthogonal grooves at right angles, said grooves being of the same depth.

2. The device as set forth in claim 1 in which the outer edges of said monolithic body .are inclined at an angle other than References Cited in the tile of this patent. UNITED STATES PATENTS 1,896,946 Gauss Feb. 7, 1933 2,120,483 Burger June 14, 1938 2,295,693 Seigh Sept. 15, 1942 2,594,959 Masters Apr. 29, 1952 2,720,732 Eubanks Oct. 18, 1955 

